1449742860 has 144 divisors (see below), whose sum is σ = 4586400000. Its totient is φ = 384398784.

The previous prime is 1449742829. The next prime is 1449742873. The reversal of 1449742860 is 682479441.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 966391 + ... + 967889.

It is an arithmetic number, because the mean of its divisors is an integer number (31850000).

Almost surely, 2^1449742860 is an apocalyptic number.

1449742860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1449742860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293200000).

1449742860 is an abundant number, since it is smaller than the sum of its proper divisors (3136657140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1449742860 is a wasteful number, since it uses less digits than its factorization.

1449742860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The square root of 1449742860 is about 38075.4889660002. The cubic root of 1449742860 is about 1131.7842852911.

The spelling of 1449742860 in words is "one billion, four hundred forty-nine million, seven hundred forty-two thousand, eight hundred sixty".